Abrasive material and mounting.



R. GARDNER.

ABRASIVE MATERIAL AND MOUNTING.

APPLIOATION FILED PEB. B, 1908.

` 966,540. Patented Aug;9,1910.

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ROLAND GARDNER, or CLEVELAND, oHIo.

ABRASIVE MATERIAL V.AND MOUNTING.

Specification of Letters Patent.

Patented Aug. 9, 1910.

Application filed February 5, 1908. Serial No. 414,389.

To all whom it may concern:

Be it known that I, ROLAND GARDNER, a subject of the King of England, and residing in the city of Cleveland, county of Cuyahoga, and State of Ohio, have invented certain new and useful Improvements in Abrasive Materials and Mountings Thereof; a-nd I do hereby declare that the following is a full, clear, and exact description of the same.

This invention relates to improvements in abrasive materials and the manner and means for mounting same in adjustable cooperative relation and condition.

The object of my invention is first, to produce abrasive material or blocks which are very effectual as to cutting quality and is not liable to gum second, to provide and arrange for a ready disposal of the waste material; third, to provide for an efficient, effectual distribution of water around the working surface of such material; and fourth, to render the relative-adjustment thereof easy and convenient within a suitable mounting. I attain these objects with abrasive material formed and mountedv substantially as shown in the accompanying drawings, in which,

Figure 1 represents a vertical. sectional view of the abrasive block and the mounting therefor on line m m see Fig. 2, and Fig. 2 is an underface view of same.

Like letters of reference denote like parts in the drawing and specification.

The characteristic feature of this invention consists in the form and arrangement of the abrasive blocks, with special regard for an advantageous water supply and a ready disposal of the waste material.

Referring first of all to the abrasive blocks A, these will be seen to resemble in the main, open skeleton sectors, having an arched body member a and two converging arms or sides b b which may be of even thickness throughout their extent or else tapering toward the ends as desired. Such arms b are angularly disposed with respect to the body portion a; the arms extend in substantially a radial direction and converge toward their free ends although such ends are not actui ally united. In preferred construction the carrier upon which such blocks are mounted is in the form of a wheel (see Fig. 2) upon which are formed spaces or pockets for the reception of the blocks by sides extending in a general radial direction, such spaces being symmetrically arranged with respect to the wheels center. The spaces thus formed are terminated at their inner ends by an annular member or ring i, which latter is provided with a spider g by means of which connection can be established with a power driven spindle (not shown). Vater can also be supplied to the blocks by w'ay of the central openings h which are formed by such ring and spider. These blocks are obviously disposed in the spaces thus provided therefor with their open ends toward the center, and for retaining them in place I provide such screws c c in the periphery of the carrier and clamping plates al d that are adapted to fit within the open ends of the blocks and to be drawn toward annular member z' by suitable bolts connecting the same therewith, as will be readily understood by reference to Fig. 2. Plates e e provided with set screws are also secured on the back of the carrier over the several spaces wherein the blocks of abrasive inateria'l are thus disposed to further assist in securely holding and protecting said blocks.

By means of the arrangement of the clamps and set screws just described ready and convenient adjustment of the blocks to thecarrier is secured without the necessity of filing or tting them in order to assemble them on such carrier. In other words the blocks and wheel are ready for use as they come from the mold without requiring to be machined or otherwise nished. At the same time when in operation the open inner ends of the blocks permit the water and slush to freely enter and leave the interior of such blocks so that the wheel always remains in proper condition to facilitate and expedite cutting, grinding or polishing the stone, glass or other material upon which it is operated.

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed, provided the means kstated by any of the following claims or the equivalent of such stated means be employed.

I therefore particularly point out and distinctly claim as my invention 1. As an article of manufacture, an abrading block in the form of a skeleton sector open at its inner end.

2. As an article of manufacture, an abrading block comprising a body member and arms angularly related thereto, such arms converging, but not uniting, at their free ends.

3. As an article of manufacture, an abrading block comprising an arched body member and two arms angularly related thereto, such arms converging, but not uniting, at their free ends.

4. As an article of manufacture, an abrading block comprising an arched body portionand two substantially radially disposed arms on the concave side thereof, such arms converging, but not uniting, at their free ends.

5. In an abrading tool, the combination with a rotatable carrier; of blocks of abrading material secured thereto, said blocks comprising body members and arms angularlyrelated thereto, such arms converging toward the axis of said carrier, but not uniting at their inner ends.

6. In an abrading tool, the combination with a rotatable carrier; of blocks of abrading material secured thereto, said blocks comprising arched body members and substantially radially disposed arms on the inner concave sides of said members, such arms converging, but not uniting, at their inner ends,

7 In an abrading tool, the combinationl with a carrier formed with spaces having sidesfextending in a general radial direction; of blocks of abrading material in the form of skeleton sectors open at their Vinner ends, secured in such spaces.

8. In an abrading tool, the combination of a carrier formed with spaces having sides extending in a general radial direction; blocks of abrading material in the form of skeleton sectors, disposed in such spaces; and clamping plates with converging sides adapted to engage said blocks to retain the same in said carrier.

`V9. In an abradingtool, the combination of a carrier formed with spaces having sides extending in a general radial direction; blocks of abrading material, in the form of skeleton sectors open at their inner ends, disposed in such spaces; and clamping plates with converging sides Vadapted to engage said blocks to retain the same in said carrier.

10. In an abrading tool, the combination of a carrier formed with spaces having sides extending in a general radial direction, the inner ends of said spaces being'termi'nated by an annular member; blocks of abrading material, in the form of skeleton sectors open at their inner ends, disposed in such spaces; clamping plates with converging sides lying within the. open ends of said blocks; and means for drawing said plates toward said annular member, whereby said blocks are retained in said carrier.

ROLAND GARDNER. 

